php生成二维码到图片上

class codeImg

{

    private $date,$img,$main,$width,$height,$target,$white;

        public function constr($source)

        {

            $this->date   = '' . date('Ymd') . '/';

            $this->img    = $this->date . md5($source) . '.jpg';

            $this->main   = imagecreatefromjpeg($source);

            $this->width  = imagesx($this->main);

            $this->height = imagesy($this->main);

            $this->target = imagecreatetruecolor($this->width, $this->height);

            $this->white  = imagecolorallocate($this->target, 255, 255, 255);

                imagefill($this->target, 0, 0, $this->white);

                imagecopyresampled($this->target, $this->main, 0, 0, 0, 0, $this->width, $this->height, $this->width, $this->height);

        }

        /**

         * 生成二维码

         * @param  [type]  $website  [生成二维码地址]

         * @param  string  $filename [生成二维路经名称]

         * @param  string  $level    [这个参数可传递的值分别是L(QR_ECLEVEL_L，7%)、M(QR_ECLEVEL_M，15%)、Q(QR_ECLEVEL_Q，25%)、H(QR_ECLEVEL_H，30%)，这个参数控制二维码容错率，不同的参数表示二维码可被覆盖的区域百分比，也就是被覆盖的区域还能识别；]

         * @param  integer $size     [控制生成图片的大小，默认为4]

         * @param  integer $margin [控制生成二维码的空白区域大小]

         * @return [type]            [description]

         */

          public function qrencode($website, $filename = false, $level = "L", $size = 4, $margin = 2)

          {

                include "./phpqrcode/qrlib.php";

                    QRcode::png($website, $filename, $level, $size, 2);

          }

          /**

         * 把二维码图片生成到背景图片上及文字

         * @param  string  $source      背景图片

         * @param  string  $text1       文字描述

         * @param  string  $child1      二维码图

         * @param  integer $textwidth   文字横向位置

         * @param  integer $textherght  文字高度

         * @param  integer $$fontSize   字体大小

         * @param  integer $cate1,$cate2,$cate3 颜色表

         * @param  string $font         文字字体

         * @return [type]               [description]

         */

         public function generateFont($source, $text1, $textwidth, $textherght, $fontSize = 18, $cate1 = 255, $cate2 = 250, $cate3 = 250, $font = './font/fangsong_GB2312.ttf')

         {

            $this->constr($source);

                $fontColor = imagecolorallocate($this->target, $cate1, $cate2, $cate3); //字的RGB颜色

                $fontBox   = imagettfbbox($fontSize, 0, $font, $text1); //文字水平居中实质

                imagettftext($this->target, $fontSize, 0, $textwidth, $textherght, $fontColor, $font, $text1);

                $this->createImg();

                return $this->img;

         }

          /**

         * [generateImg description]

         * @param  string  $source        背景图片

         * @param  string  $codeurl       二维码图片

         * @param  integer  $sourcewidth  二维码横向所在位置

         * @param  integer  $sourceheight 二维码高度位置

         * @param  integer $codewidth    二维码宽度

         * @param  integer $codeheight   二维码高度

         * @return [type]                [description]

         */

          public function generateImg($source, $codeurl, $sourcewidth, $sourceheight, $codewidth = 100, $codeheight = 100)

          {

            $this->constr($source);

                    $child1 = imagecreatefrompng($codeurl);

                    $codewidth = $codewidth > 0 ? $codewidth :imagesx($child1);

                    $codeheight = $codeheight > 0 ? $codeheight : imagesy($child1);

                    imagecopyresampled($this->target, $child1, $sourcewidth, $sourceheight, 0, 0, $codewidth, $codeheight,imagesx($child1),imagesy($child1));

                    imagedestroy($child1);

                    $this->createImg();

                    return $this->img;

        }

        function createImg()

        {

            @mkdir('./' . $this->date);

                 imagejpeg($this->target, './' . $this->img, 95);

                    imagedestroy($this->main);

                    imagedestroy($this->target);

        }

    }

        $source       = "./img/1000.jpg";

        $codeImg = new codeImg($source);

        $website = "http://www.baidu.com";

        $codeurl = "./temp/code.png";

        $codeImg->qrencode($website, $codeurl);

        #################################

        $text         = "链接";

        $textwidth    = 100;

        $textherght   = 50;

        $generateFont = $codeImg->generateFont($source, $text, $textwidth, $textherght);

        ##########################################################

        $sourcewidth  = 200;

        $sourceheight = 150;

        $generateImg  = $codeImg->generateImg($generateFont, $codeurl, $sourcewidth, $sourceheight);

        echo "";